<template>
    <div>
        <city-header></city-header>
        <city-search :cities="cities"></city-search>
        <city-list :cities="cities" :hot="hotCities" :letter="letter"></city-list>
        <city-alphabet :cities="cities" @change="handleLetterChange"></city-alphabet>
    </div>
</template>

<script>
import axios from 'axios'
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'

export default {
    name:'City',
    components:{
        CityHeader,
        CitySearch,
        CityList,
        CityAlphabet
    },
    data() {
        return {
            cities:{}, //存放字母对应的城市
            hotCities:[],  //存放热门城市的数组
            letter:'' //存放子组件传递过来的值
        }
    },
    created() {
        this.getCityInfo();
    },
    methods: {
        getCityInfo() {
            axios.get('/api/city.json')
            .then(this.handleGetCityInfoSucc)
        },
        handleGetCityInfoSucc(res) {
            res = res.data;
            // console.log(res)
            if(res.ret && res.data){
                const data = res.data;
                this.cities = data.cities;
                this.hotCities = data.hotCities;
            }

        },
        handleLetterChange(letter){ //接收子组件Alphabet传递过来的值
            // console.log(letter);
            this.letter = letter;
        }
    },
}
</script>

<style lang="stylus" scoped>
    
</style>